4. For an air-standard Otto cycle the temperature and pressure at the beginning of compression stroke are 310 K and 100 kPa respectively. The maximum temperature and pressure permitted are 3000 K and...

Extracted text: 4. For an air-standard Otto cycle the temperature and pressure at the beginning of compression stroke are 310 K and 100 kPa respectively. The maximum temperature and pressure permitted are 3000 K and 7000 kPa respectively. Assuming air as an ideal gas with Cp = 1.005 kJ/kg K and Cv = 0.718 kJ/kg K, determine (a) The compression ratio (b) The thermal efficiency (c) The net work output from the engine. %3D